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    <title>BiliNote - AI驱动的视频笔记生成工具</title>
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<body>
    <!-- Hero Section -->
    <section class="hero-gradient text-white py-20 px-6">
        <div class="max-w-6xl mx-auto">
            <div class="text-center mb-12">
                <h1 class="text-5xl md:text-6xl font-bold mb-6 animate-pulse">
                    <i class="fas fa-video mr-4"></i>BiliNote
                </h1>
                <p class="text-xl md:text-2xl mb-8 opacity-90">AI驱动的视频笔记生成工具</p>
                <p class="text-lg max-w-3xl mx-auto leading-relaxed opacity-80">
                    从Bilibili、YouTube、抖音等平台的视频中自动提取关键内容，生成结构化的Markdown笔记，让学习效率提升10倍
                </p>
                <div class="mt-10 flex flex-wrap justify-center gap-4">
                    <a href="https://github.com/JefferyHcool/BiliNote" target="_blank" class="bg-white text-purple-700 px-8 py-3 rounded-full font-semibold hover:bg-gray-100 transition-all duration-300 transform hover:scale-105">
                        <i class="fab fa-github mr-2"></i>GitHub项目
                    </a>
                    <a href="https://www.bilinote.app/" target="_blank" class="bg-transparent border-2 border-white text-white px-8 py-3 rounded-full font-semibold hover:bg-white hover:text-purple-700 transition-all duration-300 transform hover:scale-105">
                        <i class="fas fa-globe mr-2"></i>在线体验
                    </a>
                </div>
            </div>
        </div>
    </section>

    <!-- Main Content -->
    <main class="max-w-7xl mx-auto px-6 py-16">
        <!-- Problem Section -->
        <section class="mb-20 scroll-reveal">
            <div class="bg-white rounded-2xl shadow-xl p-10 card-hover">
                <h2 class="text-3xl font-bold mb-6 text-gray-800">
                    <i class="fas fa-exclamation-circle mr-3 feature-icon"></i>它能解决什么问题
                </h2>
                <div class="prose prose-lg max-w-none text-gray-600">
                    <p class="mb-4">
                        <span class="drop-cap">在</span>使用Bilibili或其他视频平台时，用户常常面临手动记笔记的痛点：视频内容丰富，但边看边记会导致分心，容易遗漏重要细节；长视频处理起来尤其繁琐，笔记往往零散、不易回顾；此外，跨平台视频笔记缺乏统一工具，增加了切换成本。
                    </p>
                    <div class="grid md:grid-cols-3 gap-6 mt-8">
                        <div class="text-center p-6 bg-purple-50 rounded-xl">
                            <i class="fas fa-clock text-4xl text-purple-600 mb-4"></i>
                            <h4 class="font-semibold text-gray-800 mb-2">耗时费力</h4>
                            <p class="text-sm text-gray-600">传统笔记方式效率低下</p>
                        </div>
                        <div class="text-center p-6 bg-purple-50 rounded-xl">
                            <i class="fas fa-puzzle-piece text-4xl text-purple-600 mb-4"></i>
                            <h4 class="font-semibold text-gray-800 mb-2">内容零散</h4>
                            <p class="text-sm text-gray-600">缺乏结构化整理</p>
                        </div>
                        <div class="text-center p-6 bg-purple-50 rounded-xl">
                            <i class="fas fa-random text-4xl text-purple-600 mb-4"></i>
                            <h4 class="font-semibold text-gray-800 mb-2">跨平台困难</h4>
                            <p class="text-sm text-gray-600">不同平台需要不同工具</p>
                        </div>
                    </div>
                </div>
            </div>
        </section>

        <!-- Core Features -->
        <section class="mb-20 scroll-reveal">
            <h2 class="text-4xl font-bold text-center mb-12 text-gradient">核心功能概述</h2>
            <div class="grid md:grid-cols-2 gap-8">
                <div class="bg-white rounded-xl shadow-lg p-8 card-hover">
                    <div class="flex items-start mb-4">
                        <i class="fas fa-layer-group text-3xl text-purple-600 mr-4 mt-1"></i>
                        <div>
                            <h3 class="text-xl font-bold text-gray-800 mb-2">多平台视频支持</h3>
                            <p class="text-gray-600">兼容Bilibili、YouTube、抖音以及本地视频文件，用户无需切换工具即可处理不同来源的内容，大大提高了笔记生成的灵活性。</p>
                        </div>
                    </div>
                </div>
                <div class="bg-white rounded-xl shadow-lg p-8 card-hover">
                    <div class="flex items-start mb-4">
                        <i class="fas fa-robot text-3xl text-purple-600 mr-4 mt-1"></i>
                        <div>
                            <h3 class="text-xl font-bold text-gray-800 mb-2">AI内容总结与Markdown生成</h3>
                            <p class="text-gray-600">利用GPT模型分析视频，提取核心要点并输出结构化Markdown笔记，包括时间戳链接，便于快速定位视频片段。</p>
                        </div>
                    </div>
                </div>
                <div class="bg-white rounded-xl shadow-lg p-8 card-hover">
                    <div class="flex items-start mb-4">
                        <i class="fas fa-microphone text-3xl text-purple-600 mr-4 mt-1"></i>
                        <div>
                            <h3 class="text-xl font-bold text-gray-800 mb-2">本地音频转录</h3>
                            <p class="text-gray-600">集成Fast-Whisper进行语音识别，支持可选CUDA加速，适用于无网络环境下的视频处理。</p>
                        </div>
                    </div>
                </div>
                <div class="bg-white rounded-xl shadow-lg p-8 card-hover">
                    <div class="flex items-start mb-4">
                        <i class="fas fa-palette text-3xl text-purple-600 mr-4 mt-1"></i>
                        <div>
                            <h3 class="text-xl font-bold text-gray-800 mb-2">笔记格式自定义</h3>
                            <p class="text-gray-600">允许用户选择笔记样式和模板，如添加截图或调整结构，满足个性化需求，提升笔记的可读性和专业性。</p>
                        </div>
                    </div>
                </div>
            </div>
        </section>

        <!-- Workflow Visualization -->
        <section class="mb-20 scroll-reveal">
            <div class="bg-white rounded-2xl shadow-xl p-10">
                <h2 class="text-3xl font-bold mb-8 text-center text-gray-800">
                    <i class="fas fa-sitemap mr-3 feature-icon"></i>工作流程图
                </h2>
                <div class="mermaid">
                    graph LR
                        A[视频输入] --> B{平台识别}
                        B --> C[Bilibili]
                        B --> D[YouTube]
                        B --> E[抖音]
                        B --> F[本地文件]
                        C --> G[视频下载]
                        D --> G
                        E --> G
                        F --> G
                        G --> H[音频提取]
                        H --> I[AI转录]
                        I --> J[内容分析]
                        J --> K[生成Markdown]
                        K --> L[输出笔记]
                        style A fill:#667eea,stroke:#fff,stroke-width:2px,color:#fff
                        style L fill:#764ba2,stroke:#fff,stroke-width:2px,color:#fff
                </div>
            </div>
        </section>

        <!-- Use Cases -->
        <section class="mb-20 scroll-reveal">
            <h2 class="text-4xl font-bold text-center mb-12 text-gradient">使用场景</h2>
            <div class="space-y-8">
                <div class="bg-gradient-to-r from-purple-50 to-pink-50 rounded-xl p-8 border-l-4 border-purple-600">
                    <h3 class="text-xl font-bold text-gray-800 mb-3">
                        <i class="fas fa-graduation-cap mr-2 text-purple-600"></i>大学生学习编程教程
                    </h3>
                    <p class="text-gray-600 leading-relaxed">在Bilibili上观看编程教程视频时，BiliNote能自动生成带代码片段和时间链接的笔记，帮助快速复习难点，避免手动暂停记述的低效。学习效率提升显著，从小时级缩短到分钟级。</p>
                </div>
                <div class="bg-gradient-to-r from-blue-50 to-cyan-50 rounded-xl p-8 border-l-4 border-blue-600">
                    <h3 class="text-xl font-bold text-gray-800 mb-3">
                        <i class="fas fa-microscope mr-2 text-blue-600"></i>研究人员分析学术讲座
                    </h3>
                    <p class="text-gray-600 leading-relaxed">上传YouTube学术讲座后，AI总结关键论点并插入截图，形成报告级笔记。大幅缩短从视频到文档的转化时间，让研究工作更加高效。</p>
                </div>
                <div class="bg-gradient-to-r from-